Only if you put on a good primer first.
Get a new dry wall or paint over it. The stain stainsthe wall, so you can pretty much only paint over it.
You can wash it off with a moist sponge, but it is likely going to still leave a stain. Drywall is very porous. It is basically paper over chalk. There is just no way to remove some stains. If you want to paint over, but the wood stain keeps bleeding through, cover the stain with a product like Killz. It sometimes takes a couple of coats. Once the Killz is totally dry, the stain should quit bleeding though. It can then be painted over. Just keep in mind, if you are using a water based paint, use water based Killz. If you are using an oil based paint, use an oil based Killz.
White drywall is just normal everyday drywall.
A drywall dimpler is a drill bit used to countersink a drywall screw to the proper depth without breaking the drywall paper.
Drywall has absolutely NO granite in it.
Drywall is VERY porous .
No, you cannot get cut by drywall
yes drywall is an insulator
That is not your best idea, most old interior furniture has old varnish or stain on it. The older furniture finishes were oil or alcohol based. Drywall primer these days is a latex (water) base and will not adhere.
Yes, drywall is a light reflector.
No, pumice has nothing to do with drywall.
After drywall primer it can.